/*
 * The MIT License
 * Copyright (c) 2012 kc4.org
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package org.kc4.sso.auth.section.provider;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.kc4.sso.auth.SSOContextParameters;
import org.kc4.sso.auth.SSOProviderInitParameters;
import org.kc4.sso.auth.section.InterruptedSectionException;
import org.kc4.sso.auth.section.ModelSection;

/**
 * @author yoichi kikuchi
 *
 */
public class RejectUncertifiedClientSection extends ModelSection {

	/**
	 * インスタンスを生成します。
	 *
	 * @param request リクエスト。
	 * @param response レスポンス。
	 */
	public RejectUncertifiedClientSection(HttpServletRequest request, HttpServletResponse response) {

		super(request, response);
	}

	@Override
	public void execute() throws InterruptedSectionException {

		String contextUrlByUrl = this.getRequest().getParameter(SSOContextParameters.getInstance().getNamingOfContextUrl());

		/*
		 * ホワイトリストの確認
		 */
		if (SSOProviderInitParameters.getInstance().getWhiteClients().length > 0
			&& !this.isArrowedClient(contextUrlByUrl)) {

			this.sendError(HttpServletResponse.SC_FORBIDDEN);
			throw new InterruptedSectionException(true);
		}
	}

	/**
	 * リクエストされたクライアントコンテキストURLホワイトリストに存在するかどうか検査します。
	 *
	 * @param contextUrl コンテキストURL。
	 * @return ホワイトリストに存在する場合は true、それ以外の場合は false。
	 */
	protected boolean isArrowedClient(String contextUrl) {

		// ホワイトリストに存在
		for (String whiteClient : SSOProviderInitParameters
			.getInstance().getWhiteClients()) {

			if (whiteClient.equals(contextUrl)) {

				return true;
			}
		}

		return false;
	}
}
